Title: Brief on the Construction Planning of the Burj Dubai Project, Dubai, UAE

joseph mati

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The harmony between architectural forms and structural

Mojgan Ghorbanzadeh

Bulletin de la Société Royale des Sciences de Liège, 2017

The Burj Khalifa Tower is the world’s tallest structure, passing all previous height records such a project by necessity requires pushing current analysis, material, construction technologies, and building systems to literally new heights. However, as such a building height has never before been attempted, it is also necessary to ensure all technologies and methods used are of sound development and practice. As such, the designers sought to be able to use conventional systems, materials, and construction of aerodynamic shaping and wind engineering played a major role in the architectural massing and design of this multi-use tower, where mitigating and taming the dynamic wind effects was one of the most important design criteria set forth at the onset of the project design. This paper provides brief description of the tower structural systems, focuses on the key issues considered in construction planning of the key structural components and briefly outlines the execution of one of th...

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Issues of Tall Building Due to Wind Forces -A Case Study

Sriman Kumar Bhattacharyya

Now a day's tall building is becoming signs of modern development in Infrastructures. India as a developing economy, new cities are developing. Tall buildings are absolutely imperative due to scarcity of spaces. In every city tall buildings with different structural systems and configurations are coming up within a next few years. The design force considerations of these buildings are becoming complicated as the height increases, which is mainly governed due to wind forces. This paper converses about the history of development of tall buildings worldwide as well as in the country. The various design aspects and issues associated with tall buildings due to wind loads are discussed here. An interesting case study of a tall building discussing the variation in the wind loading calculated as per IS 875 Pt-3 visa -vis actual and precise wind tunnel data are also presented where some of the critical wind design parameters are explained.

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Review of Aerodynamic Design Configurations for Wind Mitigation in High-Rise Buildings: Two Cases from Amman

Horizon Research Publishing(HRPUB) Kevin Nelson

Civil Engineering and Architecture, 2021

This study is concerned with reviewing and analyzing methods used in early design stages to mitigate wind effects on high-rise buildings. In order to mitigate wind effects on structures and specifically high-rise buildings, early stage aerodynamic design decisions are made. Architects try to mitigate the wind effects on buildings by choosing the right form configuration like tapering or setbacks, etc., or by making vital decisions in the early design stage. However, structural engineers utilize the structural system that can best counter-act forces acting on the stability of the building. For both architects and engineers there are many tools which can be used in early design including advanced analysis methods, wind tunnel testing and wind studies combined with Computational Fluid Dynamics (CFD) simulations. This study reviews general architectural and structural design configurations performed in the early phases of the design process, for achieving structural stability, comfort and cost control. The research methodology depends on the study and analysis of different international building examples, and also by reviewing two local high-rise building cases in Amman, Jordan. The study concludes that there are many architectural aerodynamic configurations for the purpose of mitigating wind loads, which can be used as guidelines in the early design phases.

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WIND ANALYSIS AND DESIGN OF TALL BUILDINGS, THE STATE OF THE ART

BANURU RAGHAVENDER

Urban habitats around the world are becoming more congested with rising populations and the need for tall buildings is as high as ever. Sri Lanka is experiencing this reality at present as Colombo's skyline expands rapidly with a large number of upcoming complex highrise buildings. The response of tall buildings to wind forces is a critical design criterion and it requires both conventional force based designs as well as performance based solutions. This paper discusses these challenges and the engineering solutions that they require to successfully design a tall building which is not only stable, safe and strong under wind loads but also performs excellently providing usable and highly functional design.

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The Role of Aerodynamic Modifications in the Form of Tall Buildings Against Wind Excitation

mehmet halis gunel

METU JFA, 2007

Modern tall buildings go higher and higher with the advances in structural design and high strength materials. However, every advance in height comes with a new difficulty. Efficient structural systems, high strength materials, and increased height, result with decrease in building weight and damping, and increase in slenderness. On the other hand, as the height and slenderness increase, buildings suffer from increased flexibility, which has negative effects in wind loading. Flexible structures are affected by vibration under the action of wind which cause building motion, and plays an important role in the structural and architectural designs. Understandably, contemporary tall buildings are much more vulnerable to wind excitation than their predecessors. Hence, different design methods and modifications are possible in order to ensure the functional performance of flexible structures and control the wind induced motion of tall buildings. An extremely important and effective design approach among these methods is aerodynamic modifications in architecture. In this context, the authors classify these aerodynamic modifications in architecture for resisting the lateral loads. Wind safe tall building design begins with the architect, and the influence of the wind action must be taken into consideration from the very beginning of the architectural design process by considering building aerodynamics.

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Innovative Design Method of Tall Buildings a Computational-Based Approach in Optimizing the Wind Effects on Tall Buildings

Farid Abdolhossein Pour

Static, dynamic and aerodynamic effects of wind and the response of tall buildings can be mitigated and controlled using the architectural and structural strategies. Modifying the form and geometry, such as tapering, setback and aerodynamic form are considered architectural concepts; whereas, determining appropriate lateral-load based structural systems, such as tube systems, core-supported outrigger and diagrid systems are structural concepts. In this paper, a design method of tall buildings to consider the impact of the architectural and structural design strategies to reduce wind effect and control the response of tall buildings is presented. This method of design can also consider the interrelationship between form and geometry of tall buildings and structural systems by implementing a computational workbench for architectural parametric design module, Computational Fluid Dynamics (CFD), structural analysis program (ETABS) and also optimization procedure. The main objective of this innovative method is to create a comprehensive collaboration among architects, structural engineers, fluid and wind engineers in a non-linear back and forth process to find the most efficient geometry and form with minimum wind impact and also minimum weigh of the structure for a tall building.

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Structural Improvements for Tall Buildings under Wind Loads: Comparative Study

Nicola Longarini

Shock and Vibration

The behavior of a very slender building is investigated under wind loads, to satisfy both strength and serviceability (comfort) design criteria. To evaluate the wind effects, wind tunnel testing and structural analysis were conducted, by two different procedures: (i) Pressure Integration Method (PIM), with finite element modeling, and (ii) High Frequency Force Balance (HFFB) technique. The results from both approaches are compared with those obtained from Eurocode 1 and the Italian design codes, emphasizing the need to further deepen the understanding of problems related to wind actions on such type of structure with high geometrical slenderness. In order to reduce wind induced effects, structural and damping solutions are proposed and discussed in a comparative study. These solutions include (1) height reduction, (2) steel belts, (3) tuned mass damper, (4) viscous dampers, and (5) orientation change. Each solution is studied in detail, along with its advantages and limitations, and...

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Reducing the Impact of Wind Load with Shape of High Rise Buildings

Himanshu Gaur

2020

Recent Years, Many high rise buildings are being constructed across the world due to the increase in population. From the design point of view, lateral load such as earthquake and wind load should be taken into consideration while designing process. Architectural design of buildings sometimes leads towards difficult and unusual shape that challenges structural designers. The objective of this study is to assess the building behavior when subjected to wind load. To achieve this objective, different shapes of building such as pentagonal, triangular and circular building are assessed for stability. Parameters such as storey drift and lateral displacement are considered in order to find most effective and stable shape. The computer program ETABS is used for analysis. As the height of the building increases, wind load effect becomes significant and should be considered for designing. This could also be achieved by selecting most stable shape and appropriate structural system for tall bui...

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RECENT PRACTICES OF ANALYSIS AND DESIGN OF HIGH-RISE BUILDINGS IN KUWAIT (CASE STUDY

Tarek Awida

Proceedings of 2nd ACI-Kuwait Chapter in Kuwait , 2007

The main concern of this paper is to provide an overview of the current analysis and design methodology for reinforced concrete high-rise buildings. A case study of residential complex consisting of two new 30-floor towers located in Kuwait city is presented to demonstrate the most significant factors to be considered to ensure the building is designed to have sufficient strength to withstand ultimate (factored) gravity (dead plus live) and lateral (wind plus seismic) loading and sufficient stiffness to limit deformations and lateral drift to be within the acceptable range to verify the occupancy comfort level. Building code procedures are based on general assumptions, are usually but not always conservative, and do not provide accurate wind loads because of exposure conditions, directional properties of the wind climate, complex geometry shapes, torsion, aerodynamic interactions, and load combinations. Wind tunnel tests, which are capable of more accurate load definitions have become faster and more economical as a result of improved analysis and design methodologies. Finally, recommendations for analysis and design of reinforced concrete residential high-rise buildings in Kuwait are introduced.

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